Multi-Color Electrophoretic Displays

1. A method for displaying a plurality of colors in an electrophoretic display including an electrophoretic medium disposed between two electrodes, at least one of the electrodes being light-transmissive, the electrophoretic medium comprising a first species of white reflective particles, a second species of transmissive particles, and a third species of transmissive particles, wherein the first, second, and third particles are different in color and have different electrophoretic mobilities, the method comprising: driving the second species of transmissive particles adjacent the light-transmissive electrode and driving the first species of white reflective particles between the second and third species of transmissive particles to achieve a first color; driving the third species of transmissive particles adjacent the light-transmissive electrode and driving the first species of white reflective particles between the second and third species of transmissive particles to achieve a second color; and driving the first, second, and third particles away from the light-transmissive electrode to achieve a third color.

2. The method of claim 1 , wherein the second and third species of particles are cyan and magenta, respectively, in color.

3. The method of claim 1 , wherein the first species of reflective particles are white in color.

4. The method of claim 1 , further comprising driving the first species of reflective particles adjacent the light-transmissive electrode to achieve a fourth color.

5. An electronic book reader, portable computer, tablet computer, cellular telephone, smart card, sign, watch, shelf label or flash drive incorporating the method of claim 1 .